zla_lin_berr(l) - Linux man page

Name

ZLA_LIN_BERR - ZLA_LIN_BERR compute componentwise relative backward error from the formula max(i) ( abs(R(i)) / ( abs(op(A_s))*abs(Y) + abs(B_s) )(i) ) where abs(Z) is the componentwise absolute value of the matrix or vector Z

Synopsis

SUBROUTINE ZLA_LIN_BERR

( N, NZ, NRHS, RES, AYB, BERR )

IMPLICIT

NONE

INTEGER

N, NZ, NRHS

DOUBLE

PRECISION AYB( N, NRHS ), BERR( NRHS )

COMPLEX*16

RES( N, NRHS )

Purpose

ZLA_LIN_BERR computes componentwise relative backward error from the formula max(i) ( abs(R(i)) / ( abs(op(A_s))*abs(Y) + abs(B_s) )(i) ) where abs(Z) is the componentwise absolute value of the matrix or vector Z.